Name :

(a) The force applied when a potter turns his wheel.

(b) A substance that develops static-electricity on rubbing.

(c) A device that shows the gravitational force acting on an object.

(d) A force that always acts against motion.

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Solution

(a) Muscular force

(b) Plastic comb

(c) Spring balance

(d) Frictional force

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Similar questions

Answer in brief :

(a) What are the effects of a force applied to an object?

(b) Name the different types of force.

(d) Name devices that make use of magnetic force.

(e) Explain the advantages and disadvantages of friction.

(f) What materials would you use to obtain static electric force?

Name a device which is used to measure force acting on an object.

Q66) Consider the following statements.

i) Force acting on a unit area of a surface is called impulse.

ii) Friction always acts against the applied force.

iii) For a force to act on an object, it is not necessary to have contact with the object.

Which of the above statements are true?

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